Part of the Scott A. Margolin '99 Lecture in environmental affairs series and Middlebury College Digital Lecture Archive.
Introduction by Rich Wolfson.
This lecture begins with a review of the now-solid evidence for a human influence on the climate of recent decades. Such evidence includes instrumental measurements available for the past two centuries, paleoclimate observations spanning more than a millennium, and comparisons of the predictions from computer models with observed patterns of climate change. The lecture then addresses future impacts of human-induced climate change that are significant for the United States, including possible influences on tropical Atlantic hurricane intensity and frequency and on water supplies in the Western U.S. Throughout the lecture, scientific evidence for climate change is presented at a level appropriate to a general audience.